TALLIN, Estonia – It seems impossibly cramped and somehow elegant at the same time. Inside the Estonian submarine Lembit, pristine maroon curtains made of a velvet-like material cover the tiny officers’ quarters. Wood paneling separates the sections of the sub from plump, cushioned chairs that sit in front of wooden tables, one with a leather-bound book on it.

Then at the bow, sit two torpedo tubes, one loaded. This is a warship, after all.

The nearly 200-foot-long Lembit, currently housed in a converted seaplane hanger in Tallin, Estonia’s impressive maritime museum, was the oldest submarine still afloat when it was pulled from the water in 2011.

The ship was built for the Estonian Navy in 1936 in Britain, and the ship’s decor clearly reflects the time period of fedoras. It looks like something Indiana Jones might’ve hijacked.

In real life, in the 1930s Estonia and Finland had agreed to secret military cooperation, in fear of Soviet incursions. The Lembit was part of Estonia’s contribution to joint exercises, according to the official story. The secret agreement, known only to the “highest national defense leaders,” was to use “cannon boats” and submarines from both the Finnish and Estonian coasts to “deny passage to Soviet ships.”